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<div class="title">qwt_date.cpp</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Qwt Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 1997   Josef Wilgen</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2002   Uwe Rathmann</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_date.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;qwt_math.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160; </div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;qdebug.h&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;qlocale.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160; </div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#if QT_VERSION &gt;= 0x050000</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="keyword">typedef</span> qint64 QwtJulianDay;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> QwtJulianDay minJulianDayD = Q_INT64_C( -784350574879 );</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> QwtJulianDay maxJulianDayD = Q_INT64_C( 784354017364 );</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160; </div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment">// QDate stores the Julian day as unsigned int, but</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">// there is QDate::fromJulianDay( int ). That&#39;s why</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment">// we have the range [ 1, INT_MAX ]</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">typedef</span> <span class="keywordtype">int</span> QwtJulianDay;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> QwtJulianDay minJulianDayD = 1;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> QwtJulianDay maxJulianDayD = std::numeric_limits&lt; int &gt;::max();</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160; </div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="keyword">static</span> QString qwtExpandedFormat( <span class="keyword">const</span> QString&amp; format,</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keyword">const</span> QDateTime&amp; dateTime, <a class="code" href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1e">QwtDate::Week0Type</a> week0Type )</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;{</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> week = <a class="code" href="class_qwt_date.html#a90dd1f9dc38565c003f8e1ef821965b7">QwtDate::weekNumber</a>( dateTime.date(), week0Type );</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160; </div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    QString weekNo;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    weekNo.setNum( week );</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    QString weekNoWW;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <span class="keywordflow">if</span> ( weekNo.length() == 1 )</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;        weekNoWW += QLatin1Char( <span class="charliteral">&#39;0&#39;</span> );</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    weekNoWW += weekNo;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160; </div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    QString fmt = format;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    fmt.replace( QLatin1String( <span class="stringliteral">&quot;ww&quot;</span> ), weekNoWW );</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    fmt.replace( QLatin1Char( <span class="charliteral">&#39;w&#39;</span> ), weekNo );</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    <span class="keywordflow">if</span> ( week == 1 &amp;&amp; dateTime.date().month() != 1 )</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    {</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;        <span class="comment">// in case of week 1, we might need to increment the year</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160; </div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        QLatin1String s_yyyy( <span class="stringliteral">&quot;yyyy&quot;</span> );</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        QLatin1String s_yy( <span class="stringliteral">&quot;yy&quot;</span> );</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160; </div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        <span class="comment">// week 1 might start in the previous year</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        <span class="keywordtype">bool</span> doReplaceYear = fmt.contains( s_yy );</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160; </div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        <span class="keywordflow">if</span> ( doReplaceYear )</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        {</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;            <span class="keywordflow">if</span> ( fmt.contains( <span class="charliteral">&#39;M&#39;</span> ) )</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;            {</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;                <span class="comment">// in case of also having &#39;M&#39; we have a conflict about</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;                <span class="comment">// which year to show</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160; </div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                doReplaceYear = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;            }</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;            {</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;                <span class="comment">// in case of also having &#39;d&#39; or &#39;dd&#39; we have a conflict about</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;                <span class="comment">// which year to show</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160; </div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;                <span class="keywordtype">int</span> numD = 0;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160; </div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;                <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i &lt; fmt.size(); i++ )</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;                {</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;                    <span class="keywordflow">if</span> ( fmt[i] == <span class="charliteral">&#39;d&#39;</span> )</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;                    {</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                        numD++;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;                    }</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;                    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;                    {</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;                        <span class="keywordflow">if</span> ( numD &gt; 0 &amp;&amp; numD &lt;= 2 )</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;                            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160; </div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;                        numD = 0;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;                    }</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;                }</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160; </div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                <span class="keywordflow">if</span> ( numD &gt; 0 &amp;&amp; numD &lt;= 2 )</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;                    doReplaceYear = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;            }</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        }</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160; </div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        <span class="keywordflow">if</span> ( doReplaceYear )</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        {</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            <span class="keyword">const</span> QDate dt( dateTime.date().year() + 1, 1, 1 );</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;            <span class="keyword">const</span> QString dtString = QLocale().toString( dt, s_yyyy );</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;            <span class="keywordflow">if</span> ( fmt.contains( s_yyyy ) )</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;            {</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;                fmt.replace( s_yyyy, dtString );</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;            }</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;            {</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;                fmt.replace( s_yy, dtString );</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;            }</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        }</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    }</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160; </div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <span class="keywordflow">return</span> fmt;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;}</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> Qt::DayOfWeek qwtFirstDayOfWeek()</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;{</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    <span class="keywordflow">return</span> QLocale().firstDayOfWeek();</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;}</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160; </div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> qwtFloorTime(</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587">QwtDate::IntervalType</a> intervalType, QDateTime&amp; dt )</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;{</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    <span class="comment">// when dt is inside the special hour where DST is ending</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    <span class="comment">// an hour is no unique. Therefore we have to</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    <span class="comment">// use UTC time.</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160; </div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keyword">const</span> Qt::TimeSpec timeSpec = dt.timeSpec();</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160; </div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;    <span class="keywordflow">if</span> ( timeSpec == Qt::LocalTime )</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        dt = dt.toTimeSpec( Qt::UTC );</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160; </div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <span class="keyword">const</span> QTime t = dt.time();</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <span class="keywordflow">switch</span>( intervalType )</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    {</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587aabaf7a7d45288a33590f61fe075b3590">QwtDate::Second</a>:</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        {</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;            dt.setTime( QTime( t.hour(), t.minute(), t.second() ) );</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;        }</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a7c9073c66b2628adbe772ac4c1a678ef">QwtDate::Minute</a>:</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            dt.setTime( QTime( t.hour(), t.minute(), 0 ) );</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        }</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a8e7a2f91f89423e446bfdaa1e01ebd2f">QwtDate::Hour</a>:</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        {</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;            dt.setTime( QTime( t.hour(), 0, 0 ) );</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        }</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    }</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160; </div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    <span class="keywordflow">if</span> ( timeSpec == Qt::LocalTime )</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;        dt = dt.toTimeSpec( Qt::LocalTime );</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;}</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160; </div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> QDateTime qwtToTimeSpec(</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    <span class="keyword">const</span> QDateTime&amp; dt, Qt::TimeSpec spec )</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;{</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    <span class="keywordflow">if</span> ( dt.timeSpec() == spec )</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        <span class="keywordflow">return</span> dt;</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160; </div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="keyword">const</span> qint64 jd = dt.date().toJulianDay();</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    <span class="keywordflow">if</span> ( jd &lt; 0 || jd &gt;= std::numeric_limits&lt; int &gt;::max() )</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;    {</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        <span class="comment">// the conversion between local time and UTC</span></div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        <span class="comment">// is internally limited. To avoid</span></div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        <span class="comment">// overflows we simply ignore the difference</span></div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        <span class="comment">// for those dates</span></div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160; </div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        QDateTime dt2 = dt;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;        dt2.setTimeSpec( spec );</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        <span class="keywordflow">return</span> dt2;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    }</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160; </div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    <span class="keywordflow">return</span> dt.toTimeSpec( spec );</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;}</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160; </div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="preprocessor">#if 0</span></div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160; </div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> qwtToJulianDay( <span class="keywordtype">int</span> year, <span class="keywordtype">int</span> month, <span class="keywordtype">int</span> day )</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;{</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    <span class="comment">// code from QDate but using doubles to avoid overflows</span></div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    <span class="comment">// for large values</span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160; </div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> m1 = ( month - 14 ) / 12;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> m2 = ( 367 * ( month - 2 - 12 * m1 ) ) / 12;</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> y1 = std::floor( ( 4900.0 + year + m1 ) / 100 );</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160; </div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    <span class="keywordflow">return</span> std::floor( ( 1461.0 * ( year + 4800 + m1 ) ) / 4 ) + m2</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;           - std::floor( ( 3 * y1 ) / 4 ) + day - 32075;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;}</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160; </div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> qint64 qwtFloorDiv64( qint64 a, <span class="keywordtype">int</span> b )</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;{</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    <span class="keywordflow">if</span> ( a &lt; 0 )</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;        a -= b - 1;</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160; </div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;    <span class="keywordflow">return</span> a / b;</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;}</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160; </div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> qint64 qwtFloorDiv( <span class="keywordtype">int</span> a, <span class="keywordtype">int</span> b )</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;{</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    <span class="keywordflow">if</span> ( a &lt; 0 )</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;        a -= b - 1;</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160; </div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="keywordflow">return</span> a / b;</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;}</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160; </div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160; </div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span> QDate qwtToDate( <span class="keywordtype">int</span> year, <span class="keywordtype">int</span> month = 1, <span class="keywordtype">int</span> day = 1 )</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;{</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;<span class="preprocessor">#if QT_VERSION &gt;= 0x050000</span></div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    <span class="keywordflow">return</span> QDate( year, month, day );</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordflow">if</span> ( year &gt; 100000 )</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    {</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        <span class="comment">// code from QDate but using doubles to avoid overflows</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;        <span class="comment">// for large values</span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160; </div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">int</span> m1 = ( month - 14 ) / 12;</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">int</span> m2 = ( 367 * ( month - 2 - 12 * m1 ) ) / 12;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> y1 = std::floor( ( 4900.0 + year + m1 ) / 100 );</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160; </div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">double</span> jd = std::floor( ( 1461.0 * ( year + 4800 + m1 ) ) / 4 ) + m2</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;            - std::floor( ( 3 * y1 ) / 4 ) + day - 32075;</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160; </div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;        <span class="keywordflow">if</span> ( jd &gt; maxJulianDayD )</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;        {</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;            qWarning() &lt;&lt; <span class="stringliteral">&quot;qwtToDate: overflow&quot;</span>;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;            <span class="keywordflow">return</span> QDate();</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        }</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160; </div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;        <span class="keywordflow">return</span> QDate::fromJulianDay( <span class="keyword">static_cast&lt;</span> QwtJulianDay <span class="keyword">&gt;</span>( jd ) );</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;    }</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;    {</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;        <span class="keywordflow">return</span> QDate( year, month, day );</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    }</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;}</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160; </div>
<div class="line"><a name="l00261"></a><span class="lineno"><a class="line" href="class_qwt_date.html#a8039dc115458981fc1c7fc2c0aa8d053">  261</a></span>&#160;QDateTime <a class="code" href="class_qwt_date.html#a8039dc115458981fc1c7fc2c0aa8d053">QwtDate::toDateTime</a>( <span class="keywordtype">double</span> value, Qt::TimeSpec timeSpec )</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;{</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> msecsPerDay = 86400000;</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160; </div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> days = <span class="keyword">static_cast&lt;</span> qint64 <span class="keyword">&gt;</span>( std::floor( value / msecsPerDay ) );</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160; </div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> jd = <a class="code" href="class_qwt_date.html#a4ce8b94f88898974700d1931b390d67caed8ee8f3dbc5b7a5e953b3ec51a79108">QwtDate::JulianDayForEpoch</a> + days;</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;    <span class="keywordflow">if</span> ( ( jd &gt; maxJulianDayD ) || ( jd &lt; minJulianDayD ) )</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;    {</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;        qWarning() &lt;&lt; <span class="stringliteral">&quot;QwtDate::toDateTime: overflow&quot;</span>;</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        <span class="keywordflow">return</span> QDateTime();</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    }</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160; </div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    <span class="keyword">const</span> QDate d = QDate::fromJulianDay( <span class="keyword">static_cast&lt;</span> QwtJulianDay <span class="keyword">&gt;</span>( jd ) );</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160; </div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> msecs = <span class="keyword">static_cast&lt;</span> <span class="keywordtype">int</span> <span class="keyword">&gt;</span>( value - days * msecsPerDay );</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160; </div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    <span class="keyword">static</span> <span class="keyword">const</span> QTime timeNull( 0, 0, 0, 0 );</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160; </div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    QDateTime dt( d, timeNull.addMSecs( msecs ), Qt::UTC );</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160; </div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    <span class="keywordflow">if</span> ( timeSpec == Qt::LocalTime )</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        dt = qwtToTimeSpec( dt, timeSpec );</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160; </div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;    <span class="keywordflow">return</span> dt;</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;}</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160; </div>
<div class="line"><a name="l00298"></a><span class="lineno"><a class="line" href="class_qwt_date.html#afce10fd70f7a1ecac3f97776fb2dc46a">  298</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="class_qwt_date.html#afce10fd70f7a1ecac3f97776fb2dc46a">QwtDate::toDouble</a>( <span class="keyword">const</span> QDateTime&amp; dateTime )</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;{</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span> msecsPerDay = 86400000;</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160; </div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;    <span class="keyword">const</span> QDateTime dt = qwtToTimeSpec( dateTime, Qt::UTC );</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160; </div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> days = dt.date().toJulianDay() - <a class="code" href="class_qwt_date.html#a4ce8b94f88898974700d1931b390d67caed8ee8f3dbc5b7a5e953b3ec51a79108">QwtDate::JulianDayForEpoch</a>;</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160; </div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;    <span class="keyword">const</span> QTime time = dt.time();</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> secs = 3600.0 * time.hour() +</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;        60.0 * time.minute() + time.second();</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160; </div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;    <span class="keywordflow">return</span> days * msecsPerDay + time.msec() + 1000.0 * secs;</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;}</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160; </div>
<div class="line"><a name="l00323"></a><span class="lineno"><a class="line" href="class_qwt_date.html#ab4d7b043971e13a97a8b5f9edb5eee02">  323</a></span>&#160;QDateTime <a class="code" href="class_qwt_date.html#ab4d7b043971e13a97a8b5f9edb5eee02">QwtDate::ceil</a>( <span class="keyword">const</span> QDateTime&amp; dateTime, <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587">IntervalType</a> intervalType )</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;{</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;    <span class="keywordflow">if</span> ( dateTime.date() &gt;= <a class="code" href="class_qwt_date.html#af82ba26011550602f1adb61da53bd830">QwtDate::maxDate</a>() )</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;        <span class="keywordflow">return</span> dateTime;</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160; </div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;    QDateTime dt = dateTime;</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160; </div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    <span class="keywordflow">switch</span> ( intervalType )</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    {</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a4e1d45d6382c27689a30adc11186d4f1">QwtDate::Millisecond</a>:</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        {</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        }</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587aabaf7a7d45288a33590f61fe075b3590">QwtDate::Second</a>:</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;        {</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;            qwtFloorTime( <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587aabaf7a7d45288a33590f61fe075b3590">QwtDate::Second</a>, dt );</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;            <span class="keywordflow">if</span> ( dt &lt; dateTime )</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;                dt = dt.addSecs( 1 );</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160; </div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;        }</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a7c9073c66b2628adbe772ac4c1a678ef">QwtDate::Minute</a>:</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;        {</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;            qwtFloorTime( <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a7c9073c66b2628adbe772ac4c1a678ef">QwtDate::Minute</a>, dt );</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;            <span class="keywordflow">if</span> ( dt &lt; dateTime )</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;                dt = dt.addSecs( 60 );</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160; </div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;        }</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a8e7a2f91f89423e446bfdaa1e01ebd2f">QwtDate::Hour</a>:</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;        {</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;            qwtFloorTime( <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a8e7a2f91f89423e446bfdaa1e01ebd2f">QwtDate::Hour</a>, dt );</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;            <span class="keywordflow">if</span> ( dt &lt; dateTime )</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;                dt = dt.addSecs( 3600 );</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160; </div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;        }</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a1d503616cab082a9c741be881cc0a813">QwtDate::Day</a>:</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;        {</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;            dt.setTime( QTime( 0, 0 ) );</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;            <span class="keywordflow">if</span> ( dt &lt; dateTime )</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;                dt = dt.addDays( 1 );</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160; </div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;        }</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587ae204b4e8ce8679ba9ac378e41bd77b2b">QwtDate::Week</a>:</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;        {</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;            dt.setTime( QTime( 0, 0 ) );</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;            <span class="keywordflow">if</span> ( dt &lt; dateTime )</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;                dt = dt.addDays( 1 );</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160; </div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;            <span class="keywordtype">int</span> days = qwtFirstDayOfWeek() - dt.date().dayOfWeek();</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;            <span class="keywordflow">if</span> ( days &lt; 0 )</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;                days += 7;</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160; </div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;            dt = dt.addDays( days );</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160; </div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;        }</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a0ab43f35f1bdbae7536be2be0455700a">QwtDate::Month</a>:</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;        {</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;            dt.setTime( QTime( 0, 0 ) );</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;            dt.setDate( qwtToDate( dateTime.date().year(),</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;                dateTime.date().month() ) );</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160; </div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;            <span class="keywordflow">if</span> ( dt &lt; dateTime )</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;                dt = dt.addMonths( 1 );</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160; </div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;        }</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587ae306523ed94ccf930afb811ff7a735ab">QwtDate::Year</a>:</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;        {</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;            dt.setTime( QTime( 0, 0 ) );</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160; </div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;            <span class="keyword">const</span> QDate d = dateTime.date();</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160; </div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;            <span class="keywordtype">int</span> year = d.year();</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;            <span class="keywordflow">if</span> ( d.month() &gt; 1 || d.day() &gt; 1 || !dateTime.time().isNull() )</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;                year++;</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160; </div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;            <span class="keywordflow">if</span> ( year == 0 )</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;                year++; <span class="comment">// there is no year 0</span></div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160; </div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;            dt.setDate( qwtToDate( year ) );</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;        }</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;    }</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160; </div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;    <span class="keywordflow">return</span> dt;</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;}</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160; </div>
<div class="line"><a name="l00425"></a><span class="lineno"><a class="line" href="class_qwt_date.html#a1b350f22a57b44b529bc4de740dbe213">  425</a></span>&#160;QDateTime <a class="code" href="class_qwt_date.html#a1b350f22a57b44b529bc4de740dbe213">QwtDate::floor</a>( <span class="keyword">const</span> QDateTime&amp; dateTime,</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;    <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587">IntervalType</a> intervalType )</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;{</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;    <span class="keywordflow">if</span> ( dateTime.date() &lt;= <a class="code" href="class_qwt_date.html#a9ab1845543957472c2c6529ad03ef98d">QwtDate::minDate</a>() )</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;        <span class="keywordflow">return</span> dateTime;</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160; </div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;    QDateTime dt = dateTime;</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160; </div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;    <span class="keywordflow">switch</span> ( intervalType )</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;    {</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a4e1d45d6382c27689a30adc11186d4f1">QwtDate::Millisecond</a>:</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;        {</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;        }</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587aabaf7a7d45288a33590f61fe075b3590">QwtDate::Second</a>:</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a7c9073c66b2628adbe772ac4c1a678ef">QwtDate::Minute</a>:</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a8e7a2f91f89423e446bfdaa1e01ebd2f">QwtDate::Hour</a>:</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;        {</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;            qwtFloorTime( intervalType, dt );</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;        }</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a1d503616cab082a9c741be881cc0a813">QwtDate::Day</a>:</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;        {</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;            dt.setTime( QTime( 0, 0 ) );</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;        }</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587ae204b4e8ce8679ba9ac378e41bd77b2b">QwtDate::Week</a>:</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;        {</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;            dt.setTime( QTime( 0, 0 ) );</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160; </div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;            <span class="keywordtype">int</span> days = dt.date().dayOfWeek() - qwtFirstDayOfWeek();</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;            <span class="keywordflow">if</span> ( days &lt; 0 )</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;                days += 7;</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160; </div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;            dt = dt.addDays( -days );</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160; </div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;        }</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a0ab43f35f1bdbae7536be2be0455700a">QwtDate::Month</a>:</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;        {</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;            dt.setTime( QTime( 0, 0 ) );</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160; </div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;            <span class="keyword">const</span> QDate date = qwtToDate( dt.date().year(),</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;                dt.date().month() );</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;            dt.setDate( date );</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160; </div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;        }</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;        <span class="keywordflow">case</span> <a class="code" href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587ae306523ed94ccf930afb811ff7a735ab">QwtDate::Year</a>:</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;        {</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;            dt.setTime( QTime( 0, 0 ) );</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160; </div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;            <span class="keyword">const</span> QDate date = qwtToDate( dt.date().year() );</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;            dt.setDate( date );</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160; </div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;        }</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;    }</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160; </div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;    <span class="keywordflow">return</span> dt;</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;}</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160; </div>
<div class="line"><a name="l00499"></a><span class="lineno"><a class="line" href="class_qwt_date.html#a9ab1845543957472c2c6529ad03ef98d">  499</a></span>&#160;QDate <a class="code" href="class_qwt_date.html#a9ab1845543957472c2c6529ad03ef98d">QwtDate::minDate</a>()</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;{</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;    <span class="keyword">static</span> QDate date;</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;    <span class="keywordflow">if</span> ( !date.isValid() )</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;        date = QDate::fromJulianDay( minJulianDayD );</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160; </div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;    <span class="keywordflow">return</span> date;</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;}</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160; </div>
<div class="line"><a name="l00521"></a><span class="lineno"><a class="line" href="class_qwt_date.html#af82ba26011550602f1adb61da53bd830">  521</a></span>&#160;QDate <a class="code" href="class_qwt_date.html#af82ba26011550602f1adb61da53bd830">QwtDate::maxDate</a>()</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;{</div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;    <span class="keyword">static</span> QDate date;</div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;    <span class="keywordflow">if</span> ( !date.isValid() )</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;        date = QDate::fromJulianDay( maxJulianDayD );</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160; </div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;    <span class="keywordflow">return</span> date;</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;}</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160; </div>
<div class="line"><a name="l00542"></a><span class="lineno"><a class="line" href="class_qwt_date.html#abb91fb441a254337d5445ad4bab1a662">  542</a></span>&#160;QDate <a class="code" href="class_qwt_date.html#abb91fb441a254337d5445ad4bab1a662">QwtDate::dateOfWeek0</a>( <span class="keywordtype">int</span> year, <a class="code" href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1e">Week0Type</a> type )</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;{</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;    <span class="keyword">const</span> Qt::DayOfWeek firstDayOfWeek = qwtFirstDayOfWeek();</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160; </div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;    QDate dt0( year, 1, 1 );</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160; </div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;    <span class="comment">// floor to the first day of the week</span></div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;    <span class="keywordtype">int</span> days = dt0.dayOfWeek() - firstDayOfWeek;</div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;    <span class="keywordflow">if</span> ( days &lt; 0 )</div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;        days += 7;</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160; </div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;    dt0 = dt0.addDays( -days );</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160; </div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;    <span class="keywordflow">if</span> ( type == <a class="code" href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1ea82971cd90d670fe3048ad8c377379c1d">QwtDate::FirstThursday</a> )</div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;    {</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;        <span class="comment">// according to ISO 8601 the first week is defined</span></div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;        <span class="comment">// by the first Thursday.</span></div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160; </div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;        <span class="keywordtype">int</span> d = Qt::Thursday - firstDayOfWeek;</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;        <span class="keywordflow">if</span> ( d &lt; 0 )</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;            d += 7;</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160; </div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;        <span class="keywordflow">if</span> ( dt0.addDays( d ).year() &lt; year )</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;            dt0 = dt0.addDays( 7 );</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;    }</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160; </div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;    <span class="keywordflow">return</span> dt0;</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;}</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160; </div>
<div class="line"><a name="l00585"></a><span class="lineno"><a class="line" href="class_qwt_date.html#a90dd1f9dc38565c003f8e1ef821965b7">  585</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_qwt_date.html#a90dd1f9dc38565c003f8e1ef821965b7">QwtDate::weekNumber</a>( <span class="keyword">const</span> QDate&amp; date, <a class="code" href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1e">Week0Type</a> type )</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;{</div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;    <span class="keywordtype">int</span> weekNo;</div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160; </div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;    <span class="keywordflow">if</span> ( type == <a class="code" href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1eab5c50b8108f8c4535201c0c590a598d6">QwtDate::FirstDay</a> )</div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;    {</div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;        QDate day0;</div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160; </div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;        <span class="keywordflow">if</span> ( date.month() == 12 &amp;&amp; date.day() &gt;= 24 )</div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;        {</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;            <span class="comment">// week 1 usually starts in the previous years.</span></div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;            <span class="comment">// and we have to check if we are already there</span></div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160; </div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;            day0 = <a class="code" href="class_qwt_date.html#abb91fb441a254337d5445ad4bab1a662">dateOfWeek0</a>( date.year() + 1, type );</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;            <span class="keywordflow">if</span> ( day0.daysTo( date ) &lt; 0 )</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;                day0 = <a class="code" href="class_qwt_date.html#abb91fb441a254337d5445ad4bab1a662">dateOfWeek0</a>( date.year(), type );</div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;        }</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;        <span class="keywordflow">else</span></div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;        {</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;            day0 = <a class="code" href="class_qwt_date.html#abb91fb441a254337d5445ad4bab1a662">dateOfWeek0</a>( date.year(), type );</div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;        }</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160; </div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;        weekNo = day0.daysTo( date ) / 7 + 1;</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;    }</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;    {</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;        weekNo = date.weekNumber();</div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;    }</div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160; </div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;    <span class="keywordflow">return</span> weekNo;</div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;}</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160; </div>
<div class="line"><a name="l00635"></a><span class="lineno"><a class="line" href="class_qwt_date.html#aeadce3496f631eae3a7e54749078c7a4">  635</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="class_qwt_date.html#aeadce3496f631eae3a7e54749078c7a4">QwtDate::utcOffset</a>( <span class="keyword">const</span> QDateTime&amp; dateTime )</div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;{</div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;    <span class="keywordtype">int</span> seconds = 0;</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160; </div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;    <span class="keywordflow">switch</span>( dateTime.timeSpec() )</div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;    {</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;        <span class="keywordflow">case</span> Qt::UTC:</div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;        {</div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;        }</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;        <span class="keywordflow">case</span> Qt::OffsetFromUTC:</div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;        {</div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;<span class="preprocessor">#if QT_VERSION &gt;= 0x050200</span></div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;            seconds = dateTime.offsetFromUtc();</div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;            seconds = dateTime.utcOffset();</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;        }</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;        <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;        {</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;            <span class="keyword">const</span> QDateTime dt1( dateTime.date(), dateTime.time(), Qt::UTC );</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;            seconds = dateTime.secsTo( dt1 );</div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;        }</div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;    }</div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160; </div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;    <span class="keywordflow">return</span> seconds;</div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;}</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160; </div>
<div class="line"><a name="l00686"></a><span class="lineno"><a class="line" href="class_qwt_date.html#a2c19998281321ba078d717f7f9ec6855">  686</a></span>&#160;QString <a class="code" href="class_qwt_date.html#a2c19998281321ba078d717f7f9ec6855">QwtDate::toString</a>( <span class="keyword">const</span> QDateTime&amp; dateTime,</div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;    <span class="keyword">const</span> QString&amp; format, <a class="code" href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1e">Week0Type</a> week0Type )</div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;{</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;    QString fmt = format;</div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;    <span class="keywordflow">if</span> ( fmt.contains( <span class="charliteral">&#39;w&#39;</span> ) )</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;    {</div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;        fmt = qwtExpandedFormat( fmt, dateTime, week0Type );</div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;    }</div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160; </div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;    <span class="keywordflow">return</span> QLocale().toString( dateTime, fmt );</div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;}</div>
<div class="ttc" id="aclass_qwt_date_html_a1b350f22a57b44b529bc4de740dbe213"><div class="ttname"><a href="class_qwt_date.html#a1b350f22a57b44b529bc4de740dbe213">QwtDate::floor</a></div><div class="ttdeci">static QDateTime floor(const QDateTime &amp;, IntervalType)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00425">qwt_date.cpp:425</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_a2c19998281321ba078d717f7f9ec6855"><div class="ttname"><a href="class_qwt_date.html#a2c19998281321ba078d717f7f9ec6855">QwtDate::toString</a></div><div class="ttdeci">static QString toString(const QDateTime &amp;, const QString &amp;format, Week0Type)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00686">qwt_date.cpp:686</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_a4ce8b94f88898974700d1931b390d67caed8ee8f3dbc5b7a5e953b3ec51a79108"><div class="ttname"><a href="class_qwt_date.html#a4ce8b94f88898974700d1931b390d67caed8ee8f3dbc5b7a5e953b3ec51a79108">QwtDate::JulianDayForEpoch</a></div><div class="ttdeci">@ JulianDayForEpoch</div><div class="ttdoc">The Julian day of &quot;The Epoch&quot;.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00106">qwt_date.h:105</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_a8039dc115458981fc1c7fc2c0aa8d053"><div class="ttname"><a href="class_qwt_date.html#a8039dc115458981fc1c7fc2c0aa8d053">QwtDate::toDateTime</a></div><div class="ttdeci">static QDateTime toDateTime(double value, Qt::TimeSpec=Qt::UTC)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00261">qwt_date.cpp:261</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_a90dd1f9dc38565c003f8e1ef821965b7"><div class="ttname"><a href="class_qwt_date.html#a90dd1f9dc38565c003f8e1ef821965b7">QwtDate::weekNumber</a></div><div class="ttdeci">static int weekNumber(const QDate &amp;, Week0Type)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00585">qwt_date.cpp:585</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_a9ab1845543957472c2c6529ad03ef98d"><div class="ttname"><a href="class_qwt_date.html#a9ab1845543957472c2c6529ad03ef98d">QwtDate::minDate</a></div><div class="ttdeci">static QDate minDate()</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00499">qwt_date.cpp:499</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ab4d7b043971e13a97a8b5f9edb5eee02"><div class="ttname"><a href="class_qwt_date.html#ab4d7b043971e13a97a8b5f9edb5eee02">QwtDate::ceil</a></div><div class="ttdeci">static QDateTime ceil(const QDateTime &amp;, IntervalType)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00323">qwt_date.cpp:323</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ab915db512c556a4666ada4fbfccfce1e"><div class="ttname"><a href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1e">QwtDate::Week0Type</a></div><div class="ttdeci">Week0Type</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00049">qwt_date.h:50</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ab915db512c556a4666ada4fbfccfce1ea82971cd90d670fe3048ad8c377379c1d"><div class="ttname"><a href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1ea82971cd90d670fe3048ad8c377379c1d">QwtDate::FirstThursday</a></div><div class="ttdeci">@ FirstThursday</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00058">qwt_date.h:58</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ab915db512c556a4666ada4fbfccfce1eab5c50b8108f8c4535201c0c590a598d6"><div class="ttname"><a href="class_qwt_date.html#ab915db512c556a4666ada4fbfccfce1eab5c50b8108f8c4535201c0c590a598d6">QwtDate::FirstDay</a></div><div class="ttdeci">@ FirstDay</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00067">qwt_date.h:66</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_abb91fb441a254337d5445ad4bab1a662"><div class="ttname"><a href="class_qwt_date.html#abb91fb441a254337d5445ad4bab1a662">QwtDate::dateOfWeek0</a></div><div class="ttdeci">static QDate dateOfWeek0(int year, Week0Type)</div><div class="ttdoc">Date of the first day of the first week for a year.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00542">qwt_date.cpp:542</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587">QwtDate::IntervalType</a></div><div class="ttdeci">IntervalType</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00075">qwt_date.h:76</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587a0ab43f35f1bdbae7536be2be0455700a"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a0ab43f35f1bdbae7536be2be0455700a">QwtDate::Month</a></div><div class="ttdeci">@ Month</div><div class="ttdoc">The interval is related to months.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00096">qwt_date.h:96</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587a1d503616cab082a9c741be881cc0a813"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a1d503616cab082a9c741be881cc0a813">QwtDate::Day</a></div><div class="ttdeci">@ Day</div><div class="ttdoc">The interval is related to days.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00090">qwt_date.h:90</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587a4e1d45d6382c27689a30adc11186d4f1"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a4e1d45d6382c27689a30adc11186d4f1">QwtDate::Millisecond</a></div><div class="ttdeci">@ Millisecond</div><div class="ttdoc">The interval is related to milliseconds.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00078">qwt_date.h:78</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587a7c9073c66b2628adbe772ac4c1a678ef"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a7c9073c66b2628adbe772ac4c1a678ef">QwtDate::Minute</a></div><div class="ttdeci">@ Minute</div><div class="ttdoc">The interval is related to minutes.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00084">qwt_date.h:84</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587a8e7a2f91f89423e446bfdaa1e01ebd2f"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587a8e7a2f91f89423e446bfdaa1e01ebd2f">QwtDate::Hour</a></div><div class="ttdeci">@ Hour</div><div class="ttdoc">The interval is related to hours.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00087">qwt_date.h:87</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587aabaf7a7d45288a33590f61fe075b3590"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587aabaf7a7d45288a33590f61fe075b3590">QwtDate::Second</a></div><div class="ttdeci">@ Second</div><div class="ttdoc">The interval is related to seconds.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00081">qwt_date.h:81</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587ae204b4e8ce8679ba9ac378e41bd77b2b"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587ae204b4e8ce8679ba9ac378e41bd77b2b">QwtDate::Week</a></div><div class="ttdeci">@ Week</div><div class="ttdoc">The interval is related to weeks.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00093">qwt_date.h:93</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_ad037b999a51cae4d9ab36bf8e7859587ae306523ed94ccf930afb811ff7a735ab"><div class="ttname"><a href="class_qwt_date.html#ad037b999a51cae4d9ab36bf8e7859587ae306523ed94ccf930afb811ff7a735ab">QwtDate::Year</a></div><div class="ttdeci">@ Year</div><div class="ttdoc">The interval is related to years.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8h_source.html#l00100">qwt_date.h:99</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_aeadce3496f631eae3a7e54749078c7a4"><div class="ttname"><a href="class_qwt_date.html#aeadce3496f631eae3a7e54749078c7a4">QwtDate::utcOffset</a></div><div class="ttdeci">static int utcOffset(const QDateTime &amp;)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00635">qwt_date.cpp:635</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_af82ba26011550602f1adb61da53bd830"><div class="ttname"><a href="class_qwt_date.html#af82ba26011550602f1adb61da53bd830">QwtDate::maxDate</a></div><div class="ttdeci">static QDate maxDate()</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00521">qwt_date.cpp:521</a></div></div>
<div class="ttc" id="aclass_qwt_date_html_afce10fd70f7a1ecac3f97776fb2dc46a"><div class="ttname"><a href="class_qwt_date.html#afce10fd70f7a1ecac3f97776fb2dc46a">QwtDate::toDouble</a></div><div class="ttdeci">static double toDouble(const QDateTime &amp;)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__date_8cpp_source.html#l00298">qwt_date.cpp:298</a></div></div>
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